English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/47578
COMPARTIR / IMPACTO:
Estadísticas
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Título

Predator-induced life history changes in amphibians: egg predation induces hatching

AutorChivers, Douglas P.; Kiesecker, Joseph M.; Marco, Adolfo ; Devito, Jill; Anderson, Michael T.; Blaustein, Andrew R.
Fecha de publicaciónabr-2001
EditorNordic Ecological Society Oikos
CitaciónOIKOS 92: 135 – 142. Copenhagen 2001
ResumenThe timing of transitions between life history stages should be affected by factors that influence survival and growth of organisms in adjacent life history stages. In a series of laboratory experiments, we examined the influence of predation risk as a cue to trigger a life history switch in amphibians. In the Oregon Cascade Mountains, some populations of Pacific treefrogs (Hyla regilla ) and Cascades frogs (Rana cascadae ) are under intense egg predation by predatory leeches (families Glossiphonidae and Erpobdellidae). We document that both treefrogs and Cascades frogs show plasticity in hatching characteristics in response to the threat of egg predation. Pacific treefrogs hatch sooner and at an earlier developmental stage when either predatory leeches or non-predatory earthworms are allowed direct contact with the developing egg mass. The same response is elicited even without direct contact. Chemical cues of predatory leeches and chemicals released from injured eggs appear to elicit the same early hatching response in treefrogs. For Cascades frogs, cues of leeches, but not those of injured eggs, elicit an early hatching response. Hatching early in response to egg predators may reduce predation. Plasticity of hatching characteristics has rarely been examined. However, we suspect that it may be common, particularly in populations or species that experience high variability in predation pressure between years.
Versión del editorhttp://dx.doi.org/10.1034/j.1600-0706.2001.920116.x
URIhttp://hdl.handle.net/10261/47578
DOI10.1034/j.1600-0706.2001.920116.x
Aparece en las colecciones: (EBD) Artículos
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.